Towards Hybrid Reasoning for Verifying and Validating Multilevel Models

Ontologies and its reasoning services are expected to play an important role in many application domains, as well as in software engineering in general. In model-driven engineering (MDE), models, like UML models, represent and specify software systems. One problem with using ontologies within software engineering is that while model-driven engineering realizes a four-layer metamodeling architecture, the new version of OWL Web Ontology Language, called OWL 2, it supports only simple metamodeling. Moreover, the semantics of metamodeling in OWL 2 corresponds to the contextual semantics, which leads to non-intuitive results. Another issue is that the Open World Assumption (OWA) assumes a model is incomplete. Therefore, we could not validate some constrains in OWA. In this paper, we demonstrate multilevel (meta-) modelling using ontologies described in OWL FA, which has a well-defined fixed-layered architecture and semantics. As well as an approach to integrate Closed World Assumption(CWA) with OWA in order to use both assumptions for verifying and validating multilevel models.